Is there a way to fetch the instructions from a target board's memory area(which is also a multicore processor) which is accessed through MMIO regions(through PCIe interface), without actually copying them to the host's local DRAM?
I tried to update the page tables with the MMIO address and jumped to that virtual address and also tried to jump directly to the MMIO address (PCI BASE + address on the target DRAM). However, I am not able to step through the instructions using gdb(as i could see only nops) in both the cases.
Moreover, with the below print statement, I am able to see the hex code printed on the console. addr: (PCI BASE + DRAM Address of Target)
printf(" *** Reading: 0x%lx *** \n", *CASTPTR(volatile uint64_t, addr));
I am not sure whats going wrong, any pointers to the problem are appreciated.
Thanks in advance.
